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引言:
前段時間公司做的教育系統,系統需要實時記錄用戶學習課程的情況和時間,所以對一些除視頻課程之外,對一些文本文檔型課件同樣如此,初次的方案是講office相關類型的文件進行轉換Html文件,然后展示對應的html文件,PC端差不多沒問題了,但是個別文件再轉換html之后,樣式出現了錯亂,即時做了編碼轉換處理,但是還是有個別亂碼,最后改變方案,最后統一將文件轉為pdf,然后通過流的方式在前端展示,其中包括Word Excel PPT TXT PDF等文件,代碼如下:
備注:本來是可以直接展示pdf的,但是Andior上pdf展示不了,最后統一就用IO流的方式進行讀取展示了.
1:添加maven依賴
<!--excel word txt ppt轉pdf依賴--> <dependency> <groupId>aspose</groupId> <artifactId>pdf</artifactId> <version>11.5.0</version> </dependency> <dependency> <groupId>aspose</groupId> <artifactId>words</artifactId> <version>16.4.0</version> </dependency> <dependency> <groupId>aspose</groupId> <artifactId>cell</artifactId> <version>8.9.2</version> </dependency> <dependency> <groupId>aspose</groupId> <artifactId>pdf</artifactId> <version>11.5.0</version> </dependency>
2:添加license-excel.xml文件(Resource文件夾下)
<License> <Data> <Products> <Product>Aspose.Total for Java</Product> <Product>Aspose.Words for Java</Product> </Products> <EditionType>Enterprise</EditionType> <SubscriptionExpiry>20991231</SubscriptionExpiry> <LicenseExpiry>20991231</LicenseExpiry> <SerialNumber>8bfe198c-7f0c-4ef8-8ff0-acc3237bf0d7</SerialNumber> </Data> <Signature>sNLLKGMUdF0r8O1kKilWAGdgfs2BvJb/2Xp8p5iuDVfZXmhppo+d0Ran1P9TKdjV4ABwAgKXxJ3jcQTqE/2IRfqwnPf8itN8aFZlV3TJPYeD3yWE7IT55Gz6EijUpC7aKeoohTb4w2fpox58wWoF3SNp6sK6jDfiAUGEHYJ9pjU=</Signature> </License>
3:代碼如下:
3.1獲取License文件
public static boolean getLicense(){ boolean result = false; InputStream is = null; try{ is =UploadFiles.class.getClassLoader().getResourceAsStream("license-excel.xml"); License aposeLic = new License(); aposeLic.setLicense(is); result = true; }catch(Exception e){ e.printStackTrace(); }finally{ try { is.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return result; }
3.2:文本文件轉碼
/* 將txt 轉換編碼 * @param file * @author zsqing */ public File saveAsUTF8(File file){ String code = "gbk"; byte[] head = new byte[3]; try { InputStream inputStream = new FileInputStream(file); inputStream.read(head); if (head[0] == -1 && head[1] == -2) { code = "UTF-16"; } else if (head[0] == -2 && head[1] == -1) { code = "Unicode"; } else if (head[0] == -17 && head[1] == -69 && head[2] == -65) { code = "UTF-8"; } inputStream.close(); System.out.println(code); if (code.equals("UTF-8")) { return file; } String str = FileUtils.readFileToString(file, code); FileUtils.writeStringToFile(file, str, "UTF-8"); System.out.println("轉碼結束"); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return file; }
3.3:word和txt轉換pdf
/** * 將word txt轉換成pdf * @param inPath * @param outPath * @author zsqing */ public void wordAndTextToPdf(String inPath, String outPath ,String localIP,HttpServletRequest request) { String fileToPdfUrl=""; boolean flag = false; File file = null; FileOutputStream os = null; try { //long old = System.currentTimeMillis(); // 新建一個空白文檔 file = new File(outPath); file = saveAsUTF8(file); os = new FileOutputStream(file); // InPath是將要被轉化的文檔 com.aspose.words.Document doc = new com.aspose.words.Document(inPath); /* * 全面支持DOC,DOCX進行OOXML,RTF,HTML,OpenDocument,PDF,EPUB,XPS,SWF間轉換 */ doc.save(os, SaveFormat.PDF); flag = true; //long now = System.currentTimeMillis(); //System.out.println("共耗時:" + ((now - old) / 1000.0) + "秒"); // 轉化用時 } catch (Exception e) { e.printStackTrace(); } finally { try { if (os != null) { os.close(); } } catch (Exception e) { e.printStackTrace(); } if (!flag) { file.deleteOnExit(); } } }
3.4:Excel轉換pdf
/** * 將docx轉換成pdf * @param inPath * @param outPath * @author zsqing */ public void wordToPdf(String inPath, String outPath ,String localIP,HttpServletRequest request) { String fileToPdfUrl=""; boolean flag = false; File file = null; FileOutputStream os = null; try { //long old = System.currentTimeMillis(); // 新建一個空白文檔 file = new File(outPath); file = saveAsUTF8(file); os = new FileOutputStream(file); // InPath是將要被轉化的文檔 com.aspose.words.Document doc = new com.aspose.words.Document(inPath); /* * 全面支持DOC,DOCX進行OOXML,RTF,HTML,OpenDocument,PDF,EPUB,XPS,SWF間轉換 */ doc.save(os, SaveFormat.PDF); flag = true; //long now = System.currentTimeMillis(); //System.out.println("共耗時:" + ((now - old) / 1000.0) + "秒"); // 轉化用時 } catch (Exception e) { e.printStackTrace(); } finally { try { if (os != null) { os.close(); } } catch (Exception e) { e.printStackTrace(); } if (!flag) { file.deleteOnExit(); } } }
總結
以上所述是小編給大家介紹的Java實現Word/Excel/TXT轉PDF的方法,希望對大家有所幫助,如果大家有任何疑問請給我留言,小編會及時回復大家的。在此也非常感謝大家對億速云網站的支持!
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